Direct spun shantung yarn and method of making same



Aug. 5, 1958 c. E. NEISLER, JR- 2,845g771.

DIRECT SPUN SHANTUNG YARN. AND METHOD OF MAKING SAME Filed Oct. 22, 1954INVEN (bar/ [Z /yr! '/;/'Jz BY (5mm k ATTORNEYS United States Patent C)DIRECT SPUN SHANTUNG YARN AND METHOD OF MAKING SAME Charles EugeneNeisler, Jr., Kings Mountain, N. C. Application October 22, 1954, SerialNo. 464,107 4 Claims. (Cl. 57-140) This invention relates to a directspun shantung yarn and method of making same.

One object of the present invention is the provision of an improvedmethod of making a shantung yarn having thicknesses or slubs of variablelength along the length thereof by a direct spinning process.

Another object of thepresent invention is the provision of an improvedmethod of making a shantung yarn of the above character having slubsdisposed in a non-repetitive pattern along the length thereof.

Another object of the present invention is the provision of an improvedmethod of making a shantung yarn by the use of direct spinningapparatus, the latter being conventional in all respects.

Yet another object of the present invention is the provision of agenerally improved shantung yarn of the above character which may besimply and economically produced using conventional apparatus.

The above and other objects, features and advantages of the presentinvention will be more fully understood from the following descriptionconsidered in connection with the accompanying illustrative drawing.

In the drawing which illustrates the best mode now contemplated by mefor carrying out my invention:

Fig. 1 is a side elevational diagrammatic view of direct spinningapparatus and is illustrative of the method of the present invention:

Fig. 2 is a plan view of a fabric segment formed of direct spun shantungyarns made in accordance with the present invention; and

Fig. 3 is a view of a length of shantung yarn formed according to thepresent invention.

Referring to the drawing and more particularly to Figs. 2 and 3 thereof,there is shown a segment of shantung fabric which is formed byintegrating shantung yarns 12 in any conventional manner. The shantungyarn 12 is formed by a direct spinning process in apparatus 14 andcomprises spun fibers 16 and 18, the fibers 16 being drafted andruptured in the direct spinning apparatus and the fibers 18 beingruptured at irregular intervals in said apparatus without being drafted.The yarn 12, constituted by the-spun fibers 16 and 18, has thicknessesor slubs 2%) of variable length along the length thereof and said yarnis'formed by the method to be described in detail hereinafter.

The shantung yarn 12 may be formed utilizing any suitable directspinning apparatus, for example the direct spinning apparatus 14illustrated in Fig. 1. The spinning apparatus 14, which is ofconventional construction, comprises a front pair of companion rolls 22and 24 and a rear pair of companion rolls 26 and 28, said front pair ofrolls being driven at a greater peripheral speed than the rear pair ofrolls. The front and rear pairs of rolls may be of any suitableconstruction and may be driven in any conventional manner, and asaforenoted, the front pair of rolls 22 and 24 are driven at a greaterperipheral speed than the rear pair of rolls 26 and 28 so thatcontinuous filaments fed to said rolls are, tensioned and ruptured intostaple fiber due to the tension on the filaments in passing from therear rolls to the front rolls. The companion pair of rolls is adapted tobe driven in the direction of the arrows shown in Fig. l and the instantdirect spinning apparatus is provided with a feed belt 30 operativelyassociated with the lower rear roll 26 and the belt guiding rolls 3;!and 34, said belt being adapted to facilitate the feeding of rovings oryarns through said apparatus. If desired, the direct spinning apparatusmay be of the type disclosed in my Patent No. 2,497,511, issued on Feb.14, 1950, for Direct Spinning Machine and Method, it being understoodthat the specific spinning apparatus illustrated and described above isgiven by way of example only.

Pursuant to the present invention, a bundle 36 of continuous filaments,which are capable of being drafted and ruptured in apparatus 14, is fedalongside a bundle 38 of continuous filaments having relatively weakportions along the length thereof, which are capable of being rupturedin said apparatus without drafting in said apparatus. The bundle 36 ofcontinuous filaments will be ruptured by the tensioning process whichinvolves the passage of such continuous filaments between the successivepairs of rolls aforedescribed of which the rolls of the front pair aredriven at a greater peripheral speed than the rolls of the rear pair sothat such filaments will be. tensioned and ruptured into staple fiberdue to the tension on the filaments on passing from the rear rolls 26and 28 to the front rolls 22 and 24. The bundle 38 of continuousfilaments, which are capable of being ruptured without drafting in theapparatus 14, will be ruptured at irregular intervals corresponding tothe weak portions aforedescribed. Thus the rupturing operation inapparatus 14 will be effective to convert the bundle of continuousfilaments 36 into staple fiber and to rupture the bundle 38 at irregularintervals corresponding to the weak portions of said bundle, it beingnoted that lengths of the bundle 38 will be in longitudinally spaceddisposition along the length of the finished yarn 12 since the frontpair of rolls are driven at a greater peripheral speed than the rearpair of rolls. Thus the bundle 38, which may be here characterized asthe slubbing bundle or yarn, will be severed at spaced intervals betweenthe front and rear pairs of rolls due to the tensioning processaforedescribed and the severed trailing and of such slubbing yarn willbe rapidly drawn through apparatus 14 by the front pair of rolls' due tothe relatively high peripheral speed thereof. It will be apparent thatthe leading end of the next length of slubbing yarn will belongitudinally spaced from the aforementioned trailing end of thesevered yarn. The yarns processed as described above constitute the yarn12', which is in an intermediate stage of finish and which is adapted tobe spun to form finished yarn 12. From the front pair of rolls 22 and 24of apparatus 14 the yarn 12 passes to a suitable spinning device 40which is adapted to form said yarn into the direct spun shantung yarn 12shown in Fig. 3.

The direct spun shantung yarn 12 will have thicknesses or slubs 20 ofvariable length along the length thereof, said slubs being disposed in anon-repetitive pattern along the length of the yarn. From the above itwill therefore be apparent that the direct spun shantung yarn 12 isformed by associating a bundle 36 capable of being drafted with a bundle38 incapable of being drafted, and subjecting said bundle to a rupturingoperation in the direct spinning apparatus 14- whereby to draft andrupture the bundle 36 and to rupture the slubbing yarn 38 at irregularintervals, said bundles being thereafter spun in any suitable manner toform the spun'shantung yarn.

The bundle 36 may be composed of continuous filaments of any suitablematerial which are adapted to draft and rupture in the apparatus 14 andif continuous filaments of nylon, Dacron, or the like are utilizedpursuant to the above method such filaments will be preruptured and willhave a sufficiently low twist so as to permit such preruptured filamentsto draft in the tensioning process aforedescribed. Thus if a bundle ofnylon, Dacron or any other continuous filaments are utilized which areelastic under tension, such filaments will be preruptured and will havea sufficiently low twist so that such preruptured filaments Will draftin the aforedescribed tensioning process in the direct spinningapparatus. The slubbing yarn or bundle 38 may be composed of filamentsor fibers of any suitable material and if desired, such slubbing bundlemay be composed of staple fiber twisted to prevent the drafting thereof,said bundle being adapted to rupture at intervals in passing through thedirect spinning apparatus 14 in the manner aforedescribed relative tothe bundle 38 of continuous filaments having relatively weak portionsalong the length thereof. From the above, it will be apparent that theslubbing bundle 38 may be composed of any type of filaments or fiberswhich will rupture Without drafting in the spinning apparatus 14, forexample continuous filaments having relatively weak portions along thelengths thereof or any suitable twisted discontinuous fibers which willrupture without drafting in the direct spinning apparatus. In theillustrated embodiment the bundle 36 is of a substantially larger sizethan the bundle 38 and by way of example the bundle 36 may be of theorder of 2200 denier with the bundle 38 being of the order of 600denier.

From the above it will be apparent that the shantuug yarn 12 will havethicknesses 20 of variable length along the length thereof, whichthicknesses or slubs will be disposed in a non-repetitive pattern alongthe length of the yarn. The shantung yarn 12 may be simply andeconomically produced without in any way altering or modifyingconventional direct spinning apparatus.

While I have shown and described the preferred embodiments of myinvention, it will be understood that various changes may be made in theidea or principles of the invention within the scope of the appendedclaims.

Having thus described my invention, what I claim and desire to secure byLetters Patent is:

l. A method of making a direct spun shantung yarn, comprising the stepsof feeding a bundle of continuous filaments which are capable of beingdrafted and ruptured alongside a bundle of continuous filaments havingrelatively weak portions along the length thereof which are capable ofbeing ruptured without drafting into direct spinning apparatus having'spaced companion pairs of rolls operated at different surface speeds fordrafting and rupturing said'bundle of continuous filaments and forrupturing aid bundle of continuous filaments having relatively weakportions at irregular intervals corresponding to said weak portions, andspinning said bundles together to form a direct spun shantung yarnhaving thicknesses of variable length along the length thereof.

2. A method of making a direct spun shantung yarn comprising the stepsof simultaneously feeding into a drafting apparatus two bundles offilaments alongside each other, viz., a bundle of filaments that iscapable of being ruptured and drafted and another bundle that may beruptured but is incapable of being drafted; rupturing and drafting thefirst mentioned bundle of filaments by means of said apparatus;simultaneously rupturing at irregular intervals not determined by anypattern the second mentioned bundle of filaments; and spinning togethersaid two bundles to form a direct spun shantung yarn having thicknessesor slubs of variable length along the length thereof.

3. A direct spun shantung yarn made by the method defined in claim 2.

4. A direct spun shantung yarn formed from a pair of bundles offilaments, one of said bundles having been ruptured and drafted and theother of said bundles being composed of continuous filaments havingrelatively weak portions spaced at irregular intervals and ruptured atsaid weak portions, said spun yarn having thicknesses or slubs ofvariable length along the length thereof.

References Cited in the file of this patent UNITED STATES PATENTS574,941 Richardson Jan. 12, 1897 1,313,594 Hartshorne Aug. 19, 19191,608,295 Beswick Nov. 23, 1926 1,883,384 Lohrke et al. Oct. 18, 19321,946,941 Leonard Feb. 13, 1934 1,981,546 Hartley Nov. 20, 19342,069,446 Horner Feb. 2, 1937 2,160,178 Sitzler et al May 30, 19392,472,283 Byers June 7, 1949 2,745,240 Brant May 15, 1956 FOREIGNPATENTS 302,461 Great Britain Dec. 20, 1928

